Nokia 1020 A00013691 Manual Do Utilizador
Códigos do produto
A00013691
With the Lumia 1020 we use a no-compromise xenon
flash with very high light output and extremely short
flash pulse duration. High flash output provides excel-
lent illumination to targets three metres away, and the
short pulse of the xenon flash ensures that the final
captured image is extremely sharp while preserving the
ambient lighting of the background.
flash with very high light output and extremely short
flash pulse duration. High flash output provides excel-
lent illumination to targets three metres away, and the
short pulse of the xenon flash ensures that the final
captured image is extremely sharp while preserving the
ambient lighting of the background.
real life sharpness measurement
Image sharpness is usually measured using a tripod (an
accessory that the average person rarely carries) in good
lighting conditions (also a luxury). We replicated real life
situations, using a hand-shake simulator running at 4Hz
frequency, with the Nokia Lumia 1020 challenging a mar-
ket leading 13MP device in multiple lighting conditions.
The Lumia 1020 was tested using the more ‘shareable’
5MP images and the measurements were done from
centre frame for both devices. The results are depict-
ed in Figure 8. The graph shows that Nokia Lumia 1020
resolves very close to the theoretical maximum of the
5MP image in good lighting conditions, but what is even
more remarkable is that because of the combination of
OIS and xenon flash we can provide practically the same
huge resolution also in extremely dark conditions. And
this was measured while introducing handshake to the
device! Even without help from the xenon flash the res-
olution never drops below 50 percent of the theoretical
maximum.
accessory that the average person rarely carries) in good
lighting conditions (also a luxury). We replicated real life
situations, using a hand-shake simulator running at 4Hz
frequency, with the Nokia Lumia 1020 challenging a mar-
ket leading 13MP device in multiple lighting conditions.
The Lumia 1020 was tested using the more ‘shareable’
5MP images and the measurements were done from
centre frame for both devices. The results are depict-
ed in Figure 8. The graph shows that Nokia Lumia 1020
resolves very close to the theoretical maximum of the
5MP image in good lighting conditions, but what is even
more remarkable is that because of the combination of
OIS and xenon flash we can provide practically the same
huge resolution also in extremely dark conditions. And
this was measured while introducing handshake to the
device! Even without help from the xenon flash the res-
olution never drops below 50 percent of the theoretical
maximum.
In low light conditions the competitor device was only
able to provide around 10 percent of its theoretical
maximum resolution, and even in really bright lighting
conditions only 40 percent of its capability was used. So
one might ask, why use 13 megapixels, if only 10 per-
cent of the theoretical resolution can be used?
able to provide around 10 percent of its theoretical
maximum resolution, and even in really bright lighting
conditions only 40 percent of its capability was used. So
one might ask, why use 13 megapixels, if only 10 per-
cent of the theoretical resolution can be used?
We have explained how image quality, sharpness and
good low light imaging capability are a result of multiple
features and the whole imaging chain working seam-
lessly together.
good low light imaging capability are a result of multiple
features and the whole imaging chain working seam-
lessly together.
Image quality is not only about megapixels but also
about carefully optimising the whole imaging system
to let people capture moments that matter the most -
wherever, whenever.
about carefully optimising the whole imaging system
to let people capture moments that matter the most -
wherever, whenever.
Image sharpness measured with
handshake as function of illuminance
Illuminance (Lux)
% o
f theor
etic
al
maximum r
esolution
100
90
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
10
0
10
40
60
100
400
800
Lumia 1020
Lumia 1020 with
xenon flash
Competitor
Competitor with
digital stabilisation
Competitor with
LED flash
Figure 8. Image sharpness, during simulated 4Hz 0.5 degree hand-shake, as a function of illuminance. The results are shown for
Lumia 1020 with/without flash and for a leading competitor device with and without flash as well as with digital stabilisation.
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